Let's say your average selling price for your service is 逽ሪ and you have one transaction per year per customer. Using that first years sales example we used above, you would calculate it this way. 造같 divided by 逽ሪ = 968 customers needed for the year. Now if your average transactions per customer are more than 1, then you would need fewer customers. As an example, let's say your average transaction per customers per year is 2Ǒ then 968 divided by 2Ǒ = 387 customers per year. Now let's say you estimate your conversation rate to be 3% of turning leads into paying customers with the advertising method you're going to use, how many leads would need to contact to get 387 customers? Simply divide 387 by 3% and you get 12꽭 leads you're going to need to contact.
Another consideration. Should the business plan be a document that is focused on selling an idea for a product or service? For many years I worked in a company that did not want anything in a business plan that could be construed as showing a bias towards or against a project. The mantra was to only present facts in the business plan. The Operations Research Department was there to review the analysis as being unbiased. To handle the "what if" scenarios or sensitivity analysis we prepared a supplemental analysis documents which were mostly financial oriented. Personally, I like a factual approach and use the presentation of the final document to point out the conservative aspects of the content.